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[Iain Lane <iain@xxxxxxxxxxxxxxxxxxx>]

** Also affects: xserver-xorg-video-intel (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Utopic)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1447143

Title:
  [SKL, i915_bpo] Rotation doesn't work

Status in linux package in Ubuntu:
  Triaged
Status in xserver-xorg-video-intel package in Ubuntu:
  In Progress
Status in linux source package in Utopic:
  New
Status in linux source package in Vivid:
  Triaged
Status in xserver-xorg-video-intel source package in Vivid:
  In Progress

Bug description:
  [Impact]

  Rotating the display on Skylake results in a blank screen, needs this
  for the X driver

  commit 15c307d70e00bc035bb61be5d8b6f727925e3d34
  Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
  Date:   Tue Mar 10 08:48:48 2015 +0000

      sna: Force frontbuffer to CPU for randr fallback

  and these two for i915_bpo in kernel

  commit 3b7a5119b5d2def1161226a4c6a643db537dff7e
  Author: Sonika Jindal <sonika.jindal@xxxxxxxxx>
  Date:   Fri Apr 10 14:37:29 2015 +0530

      drm/i915/skl: Support for 90/270 rotation

  commit d81063669a99b216eb6b9dfb17add4f38a839674
  Author: Sonika Jindal <sonika.jindal@xxxxxxxxx>
  Date:   Fri Apr 10 14:37:28 2015 +0530

      drm/i915/skl: Allow universal planes to position

  [Test Case]

  Use the display capplet, select rotate and apply. It should rotate
  instead of blanking the display.

  [Regression potential]

  Nope.

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